发明授权
- 专利标题: System and method for estimating signal time of arrival
- 专利标题(中): 估计信号到达时间的系统和方法
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申请号: US09321819申请日: 1999-05-28
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公开(公告)号: US06493380B1公开(公告)日: 2002-12-10
- 发明人: Shiquan Wu , Song Zhang , Xixian Chen
- 申请人: Shiquan Wu , Song Zhang , Xixian Chen
- 主分类号: H04B726
- IPC分类号: H04B726
摘要:
A method for estimating a time delay including the steps of first, estimating a channel spectrum from a received signal and a known reference signal, second, extracting a virtual array structure from the estimated channel spectrum, and third, determining the signal time delay using the virtual array structure. Further, a system for estimating a time delay including a channel spectrum estimator, means for extracting a virtual array structure and means for determining the time delay is provided. The channel spectrum estimator is used for estimating a channel spectrum from a received signal and a known reference signal. The means for extracting a virtual array structure uses the estimated channel spectrum. The means for determining the time delay uses the virtual array structure.